Printer s drying-rack



(No Model.)

H. T. KOERNER.

PRINTERS DRYING RAGK.

No. 392,735. Patented Nov. 13, 1888.

N PETERS. PhowLilbognpMr, Wnhinglnn. n. a

ll'NiTE STATES arhnr trie HERMAN T. KOERNER, OF BUFFALO, NElV YORK.

PRENTERS DRYiNG RACK.

SPECIFICATION forming part of Letters Patent No. 392,735, dated November 13, 1888.

(No model.)

To all whom it may concern.-

Be it known that I, HERMAN T. KOERNER, a citizen of the United States, residing at Buffalo, in the county of Eric and State of New York, have invented certain new and useful Improvements in Lithographers and Printers Drying- Racks; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and toletters or figures of reference marked thereon, which form a part of this specification.

Prior to my invention the printed sheets in lithographing and printing establishments have been taken as they came from the press and placed upon the racks or trays which are adapted to be slid into large and cumbersome frames or boxes in which they are left until dry. These frames are usually stationary; but if not, are necessarily bulky, and therefore .re quire considerable time and trouble in handling.

The object of my invention is to overcome these and other troublesome features; and it consists of a rack or tray constructed in such a manner that a number of the same can be laid or slid one upon the other to form a stack having spaces between the. racks for the accommodation of the printed sheets to be dried.

11 will now proceed to definitely describe the i'nanner in which lfhave carried out my invention.

In the drawings, Figure 1 represents a stack formed of my improved racks or trays. Fig. 2 represents an enlarged end view of two of my improved racks or trays, and Fig. 3 is a bottom view of one end of Fig. 2.

Referring to the drawings it will be seen that each rack or tray consists of the floorb 6, extending outwardly from the side walls, b I). These shelves form the surfaces upon which the tray above is placed or slid.

I) b are curved walls or guards extending from the shelves 6 b to the upper and outer edges of the rails Z) I). These curved walls or guards b I) serve to direct the tray as it is being slid upon the one beneath it to prevent its accidental displacement when in position.

' I)" b are curved walls in the lower outside edges of the rails I), and are adapted to register freely with the curved walls or guards 11 1) of the trayjust below it in the act of sliding one tray upon another in forming the stack.

Strips of metal, d, preferably sheet-tin, are

nailed or otherwise secured to the bottom of the flooring at each end of the tray and extend upwardly and are secured to the ends of the rails I). These strips serve as guards to prevent the breaking or wearing away of the ends of the trays.

In operation one of these trays or racks is placed upon the delivery-table of the printing press, and the sheets as printed are automati cally placed thereon by the fly of the press. \Vhen a sufficient number has accumulated, the tray is taken away to make room for the next, and is placed upon truck, as at-c, Fig. 1. Upon this tray is placed or slid another, as clearly shown in Figs. 1 and 2, and so on until a stack has accumulated, as shown in Fig. 1. The printed sheets are left as just described. until dry.

I t is apparent that a drying-stack put together as shown is exceedingly simple in con struction and arrangement, requiring no frame, as heretofore employed, consequently being much lighter and more easily manipulated. The trays being interlocked as shown, their weight and that of the printed sheets placed thereon produces a stability of structure entirely sufficient for all purposes, and the trays being constructcd entirely similar they are thus interchangeable one for the other.

A. saving of at least seventy-five per cent. of floor-space and labor in handlingis effected over the methods of stacking and drying now in use. The economy of space involved enables such a reduction in the arrangement of the number of sheets upon each tray that offsetting is entirely avoided,and the drying pro cess being more uniform thus prevents the in the guard adapted for sliding register with the jurious swelling and shrinking of the sheets, guard of the rack placed beneath all arranged and consequently effects a perfect register in in a series, as shown, to form a drying-stack 15 sheets printed with more than one color. for printed sheets, substantially as described. 5 I claim- In testimony whereof I have signed my name An interchangeable paper rack or tray for to this specification in the presence of two sublithographers or printers use, consisting, esscribing witnesses.

sentially, of a floor iece or ieces havin secured thereto on e ch side a rail, each rail HERMAN KOERNER' IO having an inner wall, a shelf or recess above l/Vitnesses:

the inner wall, a guard along the outside of the JOSEPH O. SPENCER, shelf or recess, and an outside groove below I H. GOSAOT, Jr. 

